APEX Integ USB Digital Front End Acquisition Interface

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

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

Integ. USB DSP Based Front End ² Valid Event Detection ² Real Time High Speed Integration of all six channels ² Pulse Pile-Up detection and correction. ² Pre Window Energy Discrimination ² Position Normalization ² Event Buffering

Integ. USB Description ² Six Analog Input Channels. ² Six High Speed / High Resolution ADCs. ² Last generation DSP. ² High Count Rate (>500 Kcps) , Low Dead Time (1 µs Typ. ) ² USB 2. 0 (480 Mbps) interface to IM 512 P Acquisition Software. ² Analog ECG Interface for standard ECG Monitor / Gate – Digital input for “R” wave synchronization. – Analog input for ECG waveform display. ² Digital ECG Interface (For Fiber. Optic Isolated ECG-RMT)

Modifications to original Apex Camera ² ² ² ² ² 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 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 IM 512 P Acquisition and Processing Software linked by a high speed USB 2. 0 interface. We provide a New Linearity Dot Mask, for Linearity Map acquisition. All Image Corrections are done in real time by our software.

ALL THESE (13) BOARDS ARE REMOVED

Block Diagram – Integ. USB+Int. DAC –> APEX Optical Transceiver Gantry Versatile Link Optical Connection Digital ECG Module Patient Leads (battery powered) Digital ECG Input X+ APEX Gamma XCamera Y+ Detector Y 37, 59, 61 & 95 PMTs Heads E Enorm Integ. USB A/D Valid Event Detection Pulse Pile-Up Corrector Integrator Position Normalization Buffering PC USB 2. 0 (480 Mbps) with IM 512 P Acquisition & Processing Software (On the fly Energy, Linearity, Uniformity and C. O. R. Corrections) Digital & Analog ECG Interface Int. DAC PMT Gain Control Gantry Control (mounted on top of Integ. USB) DACs to control PMT Gain and HV Auxiliary Gantry Control HV Power Supply Ethernet Link to Optional IM 512 P Processing Workstations and/or DICOM Devices

Integ. USB Board View (Size: 4. 2” x 4. 9”)

Int. DAC (Digital to Analog Converter for PMT Gain Control)

Integ. USB and Int. DAC Mounted Inside APEX Cabinet USB 2. 0 to PC HV P. S. Control +5, +12 Power PMT Gain Control Analog Input Signals E, X+, Y+, X-, Y-, Enorm

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

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

Linearity Correction SP 6 HR Uncorrected Linearity Mask Acquisition Lin. Mask with Linearity Correction Applied

Energy, Linearity & Uniformity Correction SP 6 HR Raw Unformity Flood (all corrections OFF) 99 m. Tc 100 M cts. Flood with Energy, Linearity & Uniformity ON 99 m. Tc 30 M cts. Integral Uniformity : 1. 8% Differential Uniformity : 1. 2%