Who is the manufacturer of 3D-RD-S?

Radiopharmaceutical Imaging and Dosimetry, LLC filed the 510(k) submission for 3D-RD-S (K212587).

What is the FDA product code for 3D-RD-S?

IYX. It is classified under 21 CFR 892.1100 as a Class 1 device in the Radiology panel.

What is the regulatory pathway for 3D-RD-S?

510(k) clearance (submission type: Traditional).

Who can help prepare an FDA 510(k) submission like 3D-RD-S?

Innolitics — a medical-device software consultancy — provides regulatory and engineering support for FDA 510(k) submissions. See https://innolitics.com/services/510ks/ or contact https://innolitics.com/contact.

3D-RD-S

K212587 · Radiopharmaceutical Imaging and Dosimetry, LLC · IYX · Feb 22, 2023 · Radiology

Device Facts

Record ID	K212587
Device Name	3D-RD-S
Applicant	Radiopharmaceutical Imaging and Dosimetry, LLC
Product Code	IYX · Radiology
Decision Date	Feb 22, 2023
Decision	SESE
Submission Type	Traditional
Regulation	21 CFR 892.1100
Device Class	Class 1
Attributes	Software as a Medical Device, Pediatric

Intended Use

3D-RD-S is intended to estimate radiation absorbed dose (and related quantities) to tissues after administration of a radioactive product. For use with internally administrated radioactive products, 3D-RD-S should not be used to deviate from product dosing and administrations. Refer to the product's prescribing information for instructions.

Device Story

3D-RD-S is a cloud-based SaMD for calculating radiation absorbed doses and radiobiological quantities (e.g., effective dose, RBE-weighted dose) following internal administration of radioactive products. Input data consists of time-activity curve (TAC) or time-integrated activity (TIA) data derived from external image analysis. The software integrates TAC data using user-selected fitting functions, linear interpolation, or exponential decay extrapolation. It calculates absorbed doses to target tissues using ICRP-133 phantom anatomies and ICRP-89/107/110/133 data. Operated by trained healthcare professionals (e.g., medical physicists) via web browser, the device provides dose estimates as bar graphs and exportable spreadsheets. Output supports clinical decision-making regarding radiopharmaceutical therapy dosimetry. Benefits include standardized, reproducible dose estimation for various radionuclides (alpha, beta, photon emitters) to assist in managing patient radiation exposure.

Clinical Evidence

No clinical trials were conducted. Evidence consists of benchmark testing: (1) Comparison of absorbed dose calculations against OLINDA/EXM v2.0 using clinical data for various radionuclides (In-111, F-18, Ga-68, I-131, Lu-177, Pb-212, Ra-223, Ac-225), showing <10% difference. (2) Comparison against published literature using ICRP-110/133/107 standards, showing <5% difference. (3) Inter-analyst variability study using SNMMI Dosimetry Challenge data (Lu-177-DOTATATE), showing <10% agreement in absorbed dose values for target organs.

Technological Characteristics

Cloud-based SaMD accessed via web browser. Uses ICRP-133 phantom anatomies, ICRP-107 nuclear decay data, and ICRP-89/133 SAF values. Supports 1,252 radionuclides. Calculation engine performs whole-organ/tissue dosimetry using S-values. Connectivity: Networked/Cloud. Software class: Rule-based/Mathematical modeling (curve fitting, integration).

Indications for Use

Indicated for estimating radiation absorbed dose to tissues in adults and children following administration of radioactive products.

Regulatory Classification

Identification

A scintillation (gamma) camera is a device intended to image the distribution of radionuclides in the body by means of a photon radiation detector. This generic type of device may include signal analysis and display equipment, patient and equipment supports, radionuclide anatomical markers, component parts, and accessories.

Predicate Devices

OLINDA/EXM v2.0 (K163687)

Related Devices

K191216 — Voxel Dosimetry v1.0 · Hermes Medical Solutions AB · Oct 17, 2019
K230221 — QDOSE® Multi-purpose Voxel Dosimetry (Personalized Dosimetry in Molecular Radiotherapy) · Versant Medical Physics and Radiation Safety · Aug 28, 2023
K182624 — MIM - MRT Dosimetry · Mim Software, Inc. · Dec 18, 2018
K232862 — MIM Monte Carlo Dosimetry · Mim Software, Inc. · May 13, 2024
K250064 — Dose+ (1.0) · Mvision AI OY · Sep 4, 2025

Submission Summary (Full Text)

{0}------------------------------------------------ Image /page/0/Picture/0 description: The image shows the logo of the U.S. Food and Drug Administration (FDA). On the left is the Department of Health & Human Services logo. To the right of that is the FDA logo, which is a blue square with the letters "FDA" in white. To the right of the blue square is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue. February 22, 2023 Radiopharmaceutical Imaging and Dosimetry, LLC % Nadine Bonds Director of Quality Assurance 1800 Gough St. BALTIMORE MD 21231 Re: K212587 Trade/Device Name: 3D-RD-S Regulation Number: 21 CFR 892.1100 Regulation Name: Scintillation (gamma) Camera Regulatory Class: Class I, reserved Product Code: IYX Dated: January 24, 2023 Received: January 24, 2023 Dear Nadine Bonds: We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading. If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's {1}------------------------------------------------ requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems. For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100). Sincerely, Daniel M. Krainak, Ph.D. Assistant Director Magnetic Resonance and Nuclear Medicine Team DHT8C: Division of Radiological Imaging and Radiation Therapy Devices OHT8: Office of Radiological Health Office of Product Evaluation and Quality Center for Devices and Radiological Health Enclosure {2}------------------------------------------------ # Indications for Use 510(k) Number (if known) K212587 Device Name 3D-RD-S ### Indications for Use (Describe) 3D-RD-S is intended to estimate radiation absorbed dose (and related quantities) to tissues after administration of a radioactive product. For use with internally administrated radioactive products, 3D-RD-S should not be used to deviate from product dosing and administrations. Refer to the product's prescribing information for instructions. | Type of Use (Select one or both, as applicable) | | |--------------------------------------------------------------------------------------------------------------------------|--| | <div> ☑ Prescription Use (Part 21 CFR 801 Subpart D) </div> | | | <div> ☐ Over-The-Counter Use (21 CFR 801 Subpart C) </div> | | ## CONTINUE ON A SEPARATE PAGE IF NEEDED. This section applies only to requirements of the Paperwork Reduction Act of 1995. ### *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.* The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to: > Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff(@fda.hhs.gov "An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number." {3}------------------------------------------------ Image /page/3/Picture/14 description: The image shows the logo for Rapid. The logo consists of a red triangle with an orange triangle underneath it on the left side of the image. To the right of the triangle is the word "Rapid" in a dark gray sans-serif font. # 510(k) Summary ### l. SUBMITTER Radiopharmaceutical Imaging & Dosimetry (Rapid®), LLC 1800 Gough Street Baltimore, MD 21231 Phone: 443-524-7396 Email: nbonds@rapiddosimetry.com Contact person: Nadine Bonds Date Prepared: February 17, 2023 ### II. DEVICE Name of Device: 3D-RD-S Common or Usual Name: 3D-RD-S Classification Name: Scintillation (gamma), Camera Regulatory Class: Class I (21 CFR 892.1100) Product Code: IYX #### III. PREDICATE DEVICE Primary: OLINDA/EXM v2.0, K163687 #### IV. DEVICE DESCRIPTION 3D-RD-S is a cloud-based software as a medical device (SaMD) that interacts with the user via web browsers (for example Google Chrome). Users are trained healthcare professionals with significant dosimetry knowledge and experience and also responsible for the input of the appropriate values and to make correct interpretation of the output data. 3D-RD-S takes numerical input data in the form of activity in source tissues as a function of time (TAC data) or the integral of the activity (TIA data) in source tissues over time. It then calculates the absorbed dose to a set of target tissues based on the organ sizes and anatomies of a set of standard phantoms. The software provides the user the ability to account for the differences in tissue masses between the phantoms and the subject and model uncertainties in the input data. Calculation results can be viewed and updated by other users. The software provides the ability to calculate absorbed doses and related radiobiological quantities from input data. The calculations can be made for supported radionuclides based on data in the report 89 from the International Council on Radiation Protection (ICRP). Doses to {4}------------------------------------------------ target tissues are a function of the activity integrated over time (time-integrated activity. TIA) in a set of specified source organs. The software provides two modules for the integration of input time vs. activity curve (TAC) data. First, the user can use curve fitting methods to estimate a curve that passes through the TAC data from a set of supported fitting functions. Visual and numerical indicators of how well the fitting function works with the data are provided. Notifications are given if fitting parameters are non-physical. The TAC data can then be integrated using the fitting function, or by approximating the activity between measured time points with line and assuming activity after the last time-point decays with the radionuclide's physical half-life. If desired, the user can use a combination of the curve fit, linear interpolation between the lines, and exponentially decaying extrapolation based on the physical half-life, to integrate the time-activity curves. The calculated radiobiological quantities purport to relate physical dose to biological response and are dependent on the specification of radiobiological constants. The guantities supported include the whole-body effective dose and the relative biological effectiveness (RBE) weighted dose. The effective dose is calculated based on ICRP tissue weighting factors. The RBE weighted dose is calculated using user specified RBEs for the different radiation types (standard values are provided as defaults). 3D-RD-S provides total and individual dose estimates for the various particle types, i.e., alpha particles, beta (+ and -) particles, discrete electrons (e.g., Auger electrons), and photons (gamma and x-rays). The resulting doses are plotted in a bar graph and can, along with input data, be exported in a spreadsheet. #### > INDICATIONS FOR USE 3D-RD-S is intended to estimate radiation absorbed dose (and related quantities) to tissues after administration of a radioactive product. For use with internally administrated radioactive products, 3D-RD-S should not be used to deviate from product dosing and administration instructions. Refer to the product's prescribing information for instructions. #### VI. COMPARISON OF TECHNOLOGICAL CHARACTERISTICS WITH PREDICATE As summarized in the table below, the 3D-RD-S technological characteristics compare favorably with the predicate SaMD technological characteristics. 3D-RD-S can be used with any internal radioactivity supplied by any FDA approved radiopharmaceutical, radiopharmaceuticals under development (even before ever administered to humans based on extrapolations of activities in human tissues from, e.g., animal studies), or radionuclides present in the body due to environmental exposure. {5}------------------------------------------------ # Comparison Summary | Attributes | 3D-RD-S | OLINDA/EXM, v2.0 | Comments | |-------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------| | Indications for Use | 3D-RD-S is intended to estimate radiation absorbed dose (and related quantities) to tissues after administration of a radioactive product. For use with internally administrated radioactive products, 3D-RD-S should not be used to deviate from product dosing and administration instructions. Refer to the product's prescribing information for instructions. | The intended use of OLINDA/EXM is to provide estimates (deterministic) of absorbed radiation dose at the whole organ level as a result of administering any radionuclide and to calculate effective whole-body dose. This is dependent on input data regarding biodistribution being supplied to the application. | Indications for Use is Equivalent | | Product Code Regulation | IYX / 21 CFR 892.1100 | IYX / 21 CFR 892.1100 | Product Code / Requlation is Equivalent | | Target Population | Adults, Children | Adults, Children, Pregnant women | Target Population is Equivalent | | Input | TIA, TIAC, or TAC | Fraction of injected activity in each organ or the TIAC | Input Data is Equivalent | | Radionucleotides Supported | Supports 1,252 radionucleotides | Over 1000, including Alpha Emitters | Radionucleotides Supported is Equivalent | | Dosimetry Calculation | Whole organ / tissue Dosimetry. Tissue S- Values | Whole organ / tissue Dosimetry. Tissue S- Values | Dosimetry Calculation is Equivalent | | Output | Absorbed Dose tables | Absorbed Dose tables | Output Data is Equivalent | | TAC Integration | Integration can be done based on user-selection of one of 4 fit functions, user specified washout half-life, physical decay, or a combination of the above and trapezoidal integration. The four fit functions constrain the shape of the fit and are selected by the user based on the data. The user can provide, or the software estimate initial values, of the fitting parameters. Uncertainty values provided with the data are used in the | Integration is performed based on fitting data with up to 3 exponentials. Fitting start and endpoints can be user specified. Allows specifying weights for data during fitting. The data and fit are plotted graphically. | TAC Integration is Equivalent | | Attributes | 3D-RD-S | OLINDA/EXM, v2.0 | Comments | | | fitting. Uncertainty values are used as weights in fitting. Integration is always from 0 to infinity. The fits and integration is displayed graphically. | | | | Anatomical Sites | Supports the 79 target and 43 target tissues from ICRP-133 | Supports 26 source tissues and 30 target tissues | Anatomical Sites is Equivalent | {6}------------------------------------------------ #### VII. PERFORMANCE DATA # Software Verification and Validation Testing Tests for verification and validation have been completed following Rapid's design control procedures. A risk analysis was completed, and risk controls have been implemented to mitigate identified hazards. # Benchmark Testing Rapid performed the following benchmark tests: - (1) Compared absorbed dose estimated from 3D-RD-S to those obtained using OLINDA/EXM v2.0 and inputs representative of the marketed use of 3D-RD-S including TIAC and TAC user input modes. The objective of the test was to demonstrate equivalence of absorbed dose calculations performed by 3D-RD-S against the predicate. Clinical data, obtained from Rapid's clinical trials dosimetry service business with clinically relevant administered activities, were used to compare absorbed doses calculated by 3D-RD-S to those calculated using the predicate device. This included the following radionuclides: photon emitters used for diagnostic agents (In-111, F-18, Ga-68), beta emitters used in therapy (I-131, Lu-177), and alpha emitters (Pb-212 (betaemitting parent of the alpha-emitters, Bi-212 and Po-212), Ra-223 and Ac-225) used in therapy. Absorbed doses to source tissues were considered acceptable if the absolute percent difference (defined as the difference divided by the mean multiplied by 100) between the dose calculated by the predicate and the dose from 3D-RD-S was less than 10%. For almost all cases, the difference in source tissues absorbed doses calculated using 3D-RD-S and the predicate was below the 10% threshold. The reported differences in source and non-source tissues absorbed doses can be primarily attributed to the differences in the sources of data used to generate the S-values (the basis for MIRD dose calculations) used in 3D-RD-S and the predicate for the dose calculations. {7}------------------------------------------------ - (2) Compared the absorbed dose values obtained using 3D-RD-S to those reported in published literature. Rapid surveyed several published studies that investigated a variety of radionuclides. Direct comparisons in calculated absorbed dose were made to literature results that meet the following criteria: 1) provided time-integrated activity coefficients (residence times) in specified source organs, 2) used the ICRP 110 phantoms and ICRP 133 SAF values for dose calculations, and 3) used nuclear decay data from ICRP 107. This enabled the ability to do direct comparisons between the absorbed doses for the same set of target tissues. The time integrated activity coefficients were used as direct inputs into 3D-RD-S. Radionuclides were chosen to represent gamma, beta, and alpha emitters such as F-18, Zr-89, Y-90, l-131, Lu-177 and At-211. The differences in the absorbed doses calculated using 3D-RD-S and those published in literature were below 5% for each target organ included in the published study and available in 3D-RD-S. - (3) Compared 3D-RD-S dose outputs by having two (2) analysts independently process images from SNMMII Dosimetry Challenge data for patients A and B through the dosimetry workflow pipeline. The objective of this test was to report the variability in the dose outputs as a result of having multiple operators processing the data. The test included SPECT/CT images from two patients (A and B) which were part of the SNMMI Lu-177 Dosimetry Challenge (Uribe et al. J Nuc Med. 2021). Images were acquired at four time points following Lu-177-DOTATATE administration. Source organs included the kidneys, liver, spleen (absent in Patient B), and abdominal tumors (two in Patient A; four in Patient B). Tests were performed by two analysts with a background in medical physics and extensive experience in radiopharmaceutical therapy dosimetry. The analysts compared 3D-RD-S dose outputs by independently processing images from the SNMMI Dosimetry Challenge data for patients A and B through the dosimetry workflow pipeline (i.e., draw VOls, extract TAC, ... etc.). 3D-RD-S does not provide tools for image analysis, and this was done using an external image analysis package that is not part of this submission. Despite the subjectivity in manually drawn VOIs, the final absorbed dose values were found to agree within 10% for all target normal organs. #### VIII. CONCLUSION In summary, 3D-RD-S has the same intended use and similar technological characteristics that do not raise different questions of safety or effectiveness compared to the predicate device. Therefore, 3D-RD-S is demonstrated to be substantially equivalent to OLINDA/EXM v2.0 and supports its safety and intended use.