1. APEX /IntegUSB
Digital Front End Acquisition Interface and Nuclear Medicine Processing Software
for APEX Gamma Cameras

2. Benefits Interfaces directly with Detector Signals (analog summer)
More Stable
Analog Signal path is reduced to a minimum, no signal drifts.
Less Power // Less Heat // Less Noise
Replaces all Analog Front End boards and Digital Correction & Processor Hardware, Less power consumption, No fans required.
Smaller Footprint
Bulky Consoles can be removed.
Better Specs
Final Camera Specs are usually better than the original (analog front end) camera.

3. IntegUSB DSP Based Front End
Valid Event Detection
Real Time High Speed Integration of all six channels
Pulse Pile-Up detection and correction.
Pre Window Energy Discrimination
Position Normalization
Event Buffering

4. IntegUSB Description Six Analog Input Channels.
Six High Speed / High Resolution ADCs.
Last generation DSP.
High Count Rate (>500Kcps) , Low Dead Time (1 µs Typ.)
USB 2.0 (480 Mbps) interface to IM512P Acquisition Software.
Analog ECG Interface for standard ECG Monitor / Gate
Digital input for “R” wave synchronization.
Analog input for ECG waveform display.
Digital ECG Interface (For FiberOptic Isolated ECG-RMT)

5. Modifications to original Apex Camera
Original APEX Gantry and Detector remain unmodified.
We remove ALL Consoles, Monitors and Keyboard.
We remove ALL Boards inside de Floor Cabinet.
We add a last generation DSP based Front End and a DAC board to control PMTs and HV.
We use existing HV and LV power supplies.
We add a new opto-isolated ECG gating module.
We add a last generation PC that hosts the IM512P Acquisition and Processing Software linked by a high speed USB2.0 interface.
We provide a New Linearity Dot Mask, for Linearity Map acquisition.
All Image Corrections are done in real time by our software.

6. ALL THESE (13) BOARDS ARE REMOVED

7. Block Diagram – IntegUSB+IntDAC –> APEX
Versatile Link Optical Connection
Optical Transceiver
Digital ECG Module
(battery powered)
Patient Leads
Gantry
Digital ECG Input
IntegUSB
A/D
Valid Event Detection
Pulse Pile-Up Corrector
Integrator
Position Normalization
Buffering
Digital & Analog
ECG Interface X+
APEX Gamma Camera Detector
PC with IM512P Acquisition & Processing Software X- Y+
USB 2.0 (480Mbps) Y-
37, 59, 61 & 95 PMTs Heads E
(On the fly Energy, Linearity,
Uniformity
and C.O.R. Corrections)
Enorm
IntDAC
(mounted on top of IntegUSB)
DACs to control PMT Gain and HV Auxiliary Gantry Control
HV Control
HV Power Supply
PMT Gain Control
Ethernet Link to Optional IM512P Processing Workstations and/or DICOM Devices
Gantry Control

8. IntegUSB Board View (Size: 4.2” x 4.9”)

9. IntDAC (Digital to Analog Converter for PMT Gain Control)

10. IntegUSB and IntDAC Mounted Inside APEX Cabinet
HV P.S. Control
USB 2.0 to PC
+5, +12 Power
PMT Gain Control
Analog Input Signals E,X+,Y+,X-,Y-,Enorm

11. Digital Opto-Isolated ECG Module
Patient Leads
Optical Fiber to Optical Transceiver

12. ECG Optical Transceiver
Optical Fiber Input from
ECG Module
Optical Transceiver (installed in Gantry Base)
Digital ECG Output to IntegUSB

13. Linearity Correction SP6 HR Uncorrected Linearity Mask Acquisition
Lin. Mask with Linearity Correction Applied

14. Energy, Linearity & Uniformity Correction
SP6 HR
Raw Unformity Flood (all corrections OFF)
Flood with Energy, Linearity & Uniformity ON
99mTc
100M cts.
99mTc
30M cts.
Integral Uniformity : 1.8%
Differential Uniformity : 1.2%

15. Image Processing Software
Sample Heart Studies
IM512P
Image Processing Software

16. GSPECT summed slices, 3 axes, stress (S) and rest (R).

17. Endo-epicardial contours upon the beating slices. S & R.

18. Wall thickness, seen from the inner side of LV, S and R.

19. Ejection fraction. End diastole and end systole images. S.

20. Perfusion mapped on LV surface (summed), S.

21. Thanks!