LUMISCAN 135 PHOSPHOR PLATE DIGITIZER/LUMISYS 135 ERASER

K980809 · Lumisys, Inc. · LMA · May 11, 1998 · Radiology

Device Facts

• Record ID: K980809
• Device Name: LUMISCAN 135 PHOSPHOR PLATE DIGITIZER/LUMISYS 135 ERASER
• Applicant: Lumisys, Inc.
• Product Code: LMA · Radiology
• Decision Date: May 11, 1998
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 892.2030
• Device Class: Class 2

Intended Use

The LUMISCAN 135 system is a laser phosphor plate digitizer designed for darkroom operation to read recorded patient radiation patterns in the plate and a plate eraser system to prepare the plate for re-use. The system is based on a fixed size scanning spot and is characterized by high spatial resolution and a wide gray scale dynamic range. This is achieved with a high intensity spot of light derived from a solid-state laser that is scanned across the plate as the plate is moved perpendicular to the beam scan. As the laser scans the plate, the phosphor's stored x-ray attenuated equivalent energy is released as a different light wavelength. The emitted light is collected and digitized to provide an image that can be stored on disk, transmitted to other systems for processing and manipulation, archived or printed onto film. After the plate has been read, it is placed on a high intensity sealed lightbox for erasure. Erasing the plate brings all the phosphors down to a ground state from which the plate is now ready to be reused to record a patient's anatomy from x-ray. The LUMISCAN 135 houses a plate transport system, optics module and reading electronics. Separate from the LUMISCAN 135 is the eraser unit, Lumisys 135E, which incorporates high intensity lamps with a light-tight lid for returning the phosphors to zero.

Device Story

Lumiscan 135 is a laser phosphor plate digitizer; reads x-ray attenuated energy stored on phosphor plates. Solid-state laser diode beam scans plate via galvanometer; emitted light collected by integrating cylinder; detected by photomultiplier; converted to analog signal; logarithmically amplified; digitized via A/D converter. System includes Lumisys 135E eraser unit using high-intensity lamps to reset phosphors. Operated by technologists in darkroom environments. Output is digital image for storage, transmission, or film printing. Assists clinicians in viewing patient anatomy for diagnostic purposes.

Clinical Evidence

Bench testing only. No clinical data provided. Equivalence established through comparative technical specifications and performance testing of the digitizing system.

Technological Characteristics

Solid-state laser diode (30 mW); galvanometer beam scanning; photomultiplier tube detector; 12-bit gray scale; 100-micron spot size. Connectivity via PC, ISA, or SCSI. Complies with UL 1950, CAN/CSA-C22.2 No. 950-93, EN 60950, EN 60825-1, and 21 CFR Subchapter J.

Indications for Use

Indicated for digitizing recorded patient radiation patterns from phosphor plates to produce images for storage, transmission, archiving, or printing. Used in clinical settings to facilitate diagnostic imaging of patient anatomy.

Regulatory Classification

Identification

A medical image digitizer is a device intended to convert an analog medical image into a digital format. Examples include systems employing video frame grabbers, and scanners which use lasers or charge-coupled devices.

Special Controls

*Classification.* Class II (special controls; voluntary standards—Digital Imaging and Communications in Medicine (DICOM) Std., Joint Photographic Experts Group (JPEG) Std.). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 892.9.

Predicate Devices

• Fuji Computed Radiography FCR AC-3 (K944046)
• Kodak System 400 Reader
• Agfa ADC Digitizer

Submission Summary (Full Text)

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MAY | | 1998

# 510(k) Summary

# 1. Company Identification

Lumisys Inc. 225 Humboldt Court Sunnyvale, CA 94089 Tel. [phone] Fax [phone]

#### 2. Official Correspondent

Garv J. Allsebrook Requlatory Affairs

#### 3. Date of Submission

February 28, 1998

#### 4. Device Name

| Classification Name: | Image Digitizer |
|----------------------|---------------------------------------------|
| Common/Usual Name: | Phosphor Plate Digitizer |
| Proprietary Name: | Lumiscan 135 Phosphor Plate Digitizer (PPD) |

# 5. Substantial Equivalence

Fuii, Computed Radiography FCR AC-3, K944046; Kodak, System 400 Reader, 510(k) # Not Known, Agfa ADC Digitizer, 510(k) # Not Known

#### 6. Device Description and Intended Use

The LUMISCAN 135 system is a laser phosphor plate digitizer designed for darkroom operation to read recorded patient radiation patterns in the plate and a plate eraser system to prepare the plate for re-use. The system is based on a fixed size scanning spot and is characterized by high spatial resolution and a wide gray scale dynamic range. This is achieved with a high intensity spot of light derived from a solid-state laser that is scanned across the plate as the plate is moved perpendicular to the beam scan. As the laser scans the plate, the phosphor's stored x-ray attenuated equivalent energy is released as a different light wavelength. The emitted light is collected and

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digitized to provide an image that can be stored on disk, transmitted to other systems for processing and manipulation, archived or printed onto film. After the plate has been read, it is placed on a high intensity sealed lightbox for erasure. Erasing the plate brings all the phosphors down to a ground state from which the plate is now ready to be reused to record a patient's anatomy from x-rav.

The LUMISCAN 135 houses a plate transport system, optics module and reading electronics. Separate from the LUMISCAN 135 is the eraser unit, Lumisys 135E, which incorporates high intensity lamps with a light-tight lid for returning the phosphors to zero.

The LUMISCAN 135 uses a solid state laser diode as the beam source. The laser is conditioned by a lens for beam forming and coupled to a fiber. From the fiber, the energy is directed to a scanning galvanometer. The galvanometer has a mirror that is oscillating precisely across the width of the plate and irradiating the plate with laser light. As the light impinges the plate, stored energy from the plate is emitted and collected in an integrating cylinder. The collected light is detected by a photomultiplier, converted to an analog signal which is logarithmically amplified, corrected for spatial variations in the integrating cylinder, and then digitized by an A/D converter.

#### 7. Hazard Analysis

Potential hazards as a result of equipment malfunction are:

- 1. Phosphor plate may not digitize
- 2. Phosphor plate may digitize partially.
- 3. Image artifacts, and
- 4. Phosphor plate may not completely erase.

The software has been designed to provide a user with system messages in case of equipment malfunction. These messages are listed in the Operators' Reference Guide and include a probable cause with any recommended action(s). Any artifacts that may be introduced into a digitized image, such as vertical lines resulting from dirt on the optics, are obvious to a physician or technologist.

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### 8. Safety Concerns

The hardware complies with one or more of the following safety standards (or the most current revision at the time of testing):

UL 1950 CAN/CSA-C22.2 No. 950-93 TUV: EN 60950/08.92 EN 60950 A1/01.93 EN 60950 A2/08.93 EN 60825-1/03.94

Additionally, the hardware complies with CFR 47, Part 15 and DHHS Additionally, the marawards (21 CFR Subchapter J) as appropriate.

#### Substantial Equivalence 9.0

| | Lumisys | Fuji | Kodak | Agfa |
|-------------------------------|-------------------------|---------------------|----------------------|------------------|
| Product Name | Lumiscan 135 | Fuji FCR<br>AC-3 | System 400<br>Reader | ADC<br>Digitizer |
| 510(k) Number | | K944046 | Not Known | Not Known |
| Dimensions<br>(WxHxD) (cm) | 53x33x69 | 71x105x68 | 108x141x101 | 165x180x180 |
| Weight (kg) | 165 | 180 | 270 | 500 |
| Power (VAC/A/Hz) | 120/2/60 or<br>220/1/50 | 120/2/60 | 120/2/60<br>220/1/50 | 220/14/60 |
| Scan Size (max)<br>(WxL) (cm) | 35 x 43 | 35 x 43 | 35 x 43 | 35 x 43 |
| Spot Size (microns) | 100 | Not Known | 100 | 120 |
| Dynamic Range | 5 Decades | Not Known | Not Known | Not Known |
| Gray Scale | 12 Bit | 10 Bit | 12 Bit | 12 Bit |
| Digitizing Rate | 60 per hour | 70 per hour | 50 | 70 per hour |
| Laser | 30 mW<br>Solid State | Not Known | 30 mW<br>HeNe | 35 mW<br>HeNe |
| Beam Scan | Galvanometer | Polygonal<br>Mirror | Galvanometer | Galvanometer |
| Resolution X/Y | 2.85 - 5<br>LP/mm | Not Known | Not Known | 3-4.5<br>LP/mm |
| Pixels per mm (35 x 43) | 5-10 | 5-10 | Not Known | Not Known |
| Interface | PC, ISA or<br>SCSI | Proprietary | Proprietary | Proprietary |

The following products provide functions, which are substantially equivalent to this product:

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Image /page/3/Picture/0 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo consists of a stylized eagle with three lines forming its body and wings. The eagle is positioned within a circle, and the text "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" is arranged around the upper half of the circle. The text is written in all capital letters.

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

MAY | |-1998

c/o Regulatory Management Services

Lumisys, Inc.

Gary J. Allsebrook

Official Correspondent

16303 Panoramic Way

San Leandro, CA 94578

Re:

K980809 Lumiscan 135 Phosphor Plate Digitizer Lumiscan 135E Eraser Dated: February 28, 1998 Received: March 3, 1998 Regulatory class: Unclassified Procode: 90 LMA

Dear Mr. Allsebrook:

We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to 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). You may, therefore, narket the device, subject to the general controls provisions of the Act. 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.

If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.

This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predication for your device and thus, permits your device to proceed to the market.

If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in vitto diagnostic devices), please contact the Office of Compliance at [phone]. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at [phone]. Also, please note the regulation . entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number [phone] or [phone] or at its Internet address "http://www.fda.gov/odrb/dsmaldsmam.html".

Sincerely yours,
Kilian Yin

Lillian Yin, Ph.D. Director, Division of Reproductive Abdominal, Ear, Nose and Throat and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

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#### Page 1 of 1

K980809

510(k) Number (if known):

Lumiscan 135 Phosphor Plate Digitizer (PPD) and Lumisys Device Name: 135E Eraser.

Indications For Use:

The LUMISCAN 135 system is a laser phosphor plate digitizer designed for darkroom operation to read recorded patient radiation patterns in the plate and a plate eraser system to prepare the plate for re-use. The system is based on a fixed size scanning spot and is characterized by high spatial resolution and a wide gray scale dynamic range. This is achieved with a high intensity spot of light derived from a solid-state laser that is scanned across the plate as the plate is moved perpendicular to the beam scan. As the laser scans the plate, the phosphor's stored x-ray attenuated equivalent energy is released as a different light wavelength. The emitted light is collected and digitized to provide an image that can be stored on disk, transmitted to other systems for processing and manipulation, archived or printed onto film. After the plate has been read, it is placed on a high intensity sealed lightbox for erasure. Erasing the plate brings all the phosphors down to a ground state from which the plate is now ready to be reused to record a patient's anatomy from x-rav.

The LUMISCAN 135 houses a plate transport system, optics module and reading electronics. Separate from the LUMISCAN 135 is the eraser unit, Lumisys 135E, which incorporates high intensity lamps with a light-tight lid for returning the phosphors to zero.

(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)

Concurrence of CDRH, Office of Device Evaluation (ODE)

Prescription Use (Per 21 CFR 901.109)

OR

Over-the-Counter Use

John H. Seym
Division Sign Off

Division Sign-Off) Division of Reproductive, Abdominal, E and Radiological Devi

510(k) Number

(Optional Format 1-2-96)