Product Information

PEMGRAPH

PEMGRAPH

Features

Whole Breast in the Field of View

　　　　The detector consists of two 20-cm-long parallel plates (20×14 cm² each) and is designed so that the detector assembly can be moved vertically in 25-mm increments.
　　　　The detector spacing can be optimized to the size of the breast, allowing the entire breast, including the axillary and chest-wall regions, to be
　　　　included in the field of view with no blind areas.

Reduced Anxiety During Examination

　　　　Unlike X-ray mammography, PEMGRAPH does not require strong breast compression, and examinations can also be performed while the patient is wearing an examination gown.
　　　　This helps substantially reduce anxiety and concern associated with breast cancer examinations.

Improved Spatial Resolution

　　　　The detector uses Pr:LuAG (Pr:Lu₃Al₅O₁₂) scintillators with excellent timing resolution. Compared with whole-body PET systems,
　　　　PEMGRAPH has a smaller detector separation, and the use of fast scintillators helps improve imaging performance.
　　　　Furthermore, by optimizing the Pr:LuAG scintillator crystal size for the detector configuration,
　　　　a spatial resolution of 2.0 mm or better has been achieved.

Compact Design

　　　　The main unit has a compact installation footprint of 50×165 cm², approximately 50% of the area of a standard tatami mat (91×182 cm²).
　　　　The detector positioning mechanism is motorless, helping reduce the overall weight.
　　　　Vertical detector movement and ±90-degree rotation make breast positioning easy.

Time Saving

　　　　Each breast can be scanned in approximately 3–5 minutes, and both breasts can be examined in about 10 minutes in a typical protocol including positioning.
　　　　Image reconstruction takes approximately 1 minute, enabling images to be reviewed immediately.

Specifications

Generic Name	Positron CT System for Nuclear Medicine Diagnosis (40644000)
Product Name	Breast PET PEMGRAPH
Medical Device Approval No.	22600BZX00513000

Electrical Rating	Supply Voltage	AC100V　50/60Hz
Electrical Rating	Power Input	600 VA (at maximum load)
Equipment Classification	Type of Protection	Class I equipment
Equipment Classification	Degree of Protection	Equipment with a Type B applied part

	Attenuation Correction Accuracy	Contrast	Target Size	4× Background
Performance	Spatial Resolution	FWHM　2.0㎜ or less
	Spatial Resolution	FWTM　3.5㎜ or less
	Peak Count Rate	Peak true coincidence count rate: 50 kcps or more
	Peak Count Rate	Peak noise-equivalent count rate: 30 kcps or more
	Sensitivity	5.0cps/kBq
			φ 3.7㎜ hot sphere	10% or more
			φ 4.8㎜ hot sphere	25% or more
			φ 6.0㎜ hot sphere	40% or more
			φ 6.0㎜ cold sphere	50% or more

Fixation with Plate	Maximum pressing force of fixation plate: 55 N ±10%
Main Unit Dimensions	W 502㎜ × D 1635㎜ × H (max.) 1655㎜
Main Unit Mass	350kg

Configuration	Main Unit	PEMGRAPH main unit Isolation transformer　　　　Foot switch (IPX7)
	Console	Data-acquisition PC Image-reconstruction PC Operation PC One monitor for the above PCs, keyboard, and mouse
	Accessories	Fixation plate

Detector Unit Configuration

Four detector units are incorporated into each of the upper and lower detector assemblies.

Properties of Pr:LuAG

Detector Movement Range

Detector Rotation Range

Vertical Detector Movement Range

Detector Spacing Adjustment Range

Imaging Positions

CC position

MLO position

Layout

System Dimensions

Weight: 350 kg

Dimensions: W 502 mm × H 1655 mm × D 1635 mm

Isolation Transformer

Weight: 16 kg

Dimensions: W 220 mm × H 182 mm ×

D 355 mm　Tolerance

PEM Imaging Examples

Clinical Evaluation of Spatial Resolution [1]

Clinical Evaluation of Spatial Resolution [2]

Sendai Imaging Clinic — clinical imaging and evaluation

Small-Animal PET

Mirai-PET

World’s first implementation of a CLS (Crosshair Light-Sharing) detector*

Simultaneous DOI and TOF capability

Spatial resolution of less than 1 mm

* The CLS detector is a technology put into practical use by the National Institutes for Quantum Science and Technology (QST).

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Scintillator Crystals

Ce:GAGG

Ce:GAGG is a scintillator crystal with high light output and high density, and it is non-hygroscopic.
Short-decay-time and enhanced-energy-resolution versions are also available
to suit your application. Please contact us for details.

Pr:LuAG

Pr:LuAG is a scintillator crystal with a short fluorescence decay time and excellent energy resolution.
It is also used in our Breast PET PEMGRAPH
system.