# US 10,244,992 B2 · Interface for positron emission tomography (PET) scanner detector module

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- Number: US 10,244,992 B2
- Document ID: US10244992B2
- Status: Granted
- Kind: B2
- Application number: 16/150,257
- Filed: 2018-10-02
- Published: 2019-01-31
- Granted: 2019-04-02
- Earliest claimed: 2016-06-09
- Applicants: Yibao Wu
- Inventors: Yibao Wu
- Web page: https://patentgrep.com/patent/US10244992B2

## CPC

- A61B 6/037: {Emission tomography}
- A61B 6/54: {Control of apparatus or devices for radiation diagnosis}
- A61B 6/56: {Details of data transmission or power supply, e.g. use of slip rings}
- G01T 1/2985: {In depth localisation, e.g. using positron emitters; Tomographic imaging (longitudinal and transverse section imaging; apparatus for radiation diagnosis sequentially in different planes, steroscopic radiation diagnosis); (using external radiation sources A61B6/02)}
- A61B 6/4258: {for detecting non x-ray radiation, e.g. gamma radiation (A61B6/037 takes precedence)}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- G01T: MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N23/00; tubes for determining the presence, intensity, density or energy of radiation or particles H01J47/00)

## Abstract

An integrated interface of a detector module of a Positron Emission Tomography (PET) may include a power module, a clock module, a synchronization module, and a communication module. In one embodiment, Gigabit Ethernet, 10G Ethernet, Fast Ethernet (100M), 10M Ethernet or custom speed Ethernet based solution can be used in the communication module. In the power module, the power is can be transmitted by standard PoE (Power over Ethernet) method, while the clock can be recovered from Ethernet in the clock module. In the synchronization module, in one embodiment, the synchronization can be done through a dedicated package and/or IEEE1588. The integrated interface can be implemented in other systems. For example, it can be used in a gamma camera system or gamma probe, especially a dynamic gamma camera or handheld gamma camera.

## Claims

### Claim 1

A Positron Emission Tomography (PET) device comprising:
one or more scan detectors configured to detect radiation emitted from a patient's body placed within said PET device;
at least one coincidence processing unit (CPU) to receive data from said detectors; and
an Ethernet interface to communicate between at least one CPU and said detector,
wherein the detector is configured to transmit data, receive power, recover clock and synchronize information between the detector and the CPU through the Ethernet interface,
wherein the PET device has a clock module having a clock recovery circuitry on the detector to recover the clock from CPU, and on the CPU to recover the clock from the detector, monitor the fine difference with a Time to Digital Converter (TDC); and a synchronization module to count clock cycles to determine the coarse difference, and a direct detection of synchronization package used on master and/or slave sides to eliminate multiple peak effect.

### Claim 2 (depends on 1)

The PET device of claim 1, further comprising a hub configuration including a customized hub having at least one upstream port and multiple downstream ports performing the clock and synchronization functions. The hub can be placed between a CPU (or another hub) and one or more detectors (or hubs).

### Claim 3 (depends on 1)

The PET device of claim 1, wherein the Ethernet interface includes Gigabit Ethernet, 10G Ethernet, Fast Ethernet (100M), 10M Ethernet, or Ethernet at custom speed.

### Claim 4 (depends on 1)

The PET device of claim 1 further comprising at least a personal computer (PC) connected to the CPU.

### Claim 5 (depends on 1)

The PET device of claim 1, wherein the data transmission between the detector and CPU is through User Datagram Protocol (UDP), Transmission Control Protocol (TCP), or Internet Protocol (IP).

### Claim 6 (depends on 1)

The PET device of claim 1, wherein a dedicated package and/or IEEE1588 is used to implement the synchronization between the detector and CPU.

### Claim 7 (depends on 1)

The PET device of claim 1, wherein the CPU is a centralized CPU, a distributed CPU or a software CPU.

### Claim 8 (depends on 1)

The PET device of claim 1, wherein the Ethernet interface can be used in other image systems, including SPECT, Gamma Camera and Gamma Probe.

### Claim 9 (depends on 1)

The PET device of claim 1, wherein an Ethernet cable is used for the Ethernet interface.

### Claim 10 (depends on 1)

The PET device of claim 1, wherein an HDMI cable is used for the Ethernet interface.

### Claim 11 (depends on 2)

The PET device of claim 2, wherein the hub configuration is placed between a CPU and one or more detectors.

### Claim 12 (depends on 2)

The PET device of claim 2, wherein the hub configuration is placed between hubs.