Yttrium Silicate Lutetium LYSO

Brief : Lutetium-yttrium oxyorthosilicate, also known as LYSO, is an inorganic chemical compound with main use as a scintillator crystal. Its chemical formula is Lu2(1-x)Y2xSiO5. It is commonly used to build electromagnetic calorimeters in particle physics. LYSO crystals have the advantages of high light output and density, quick decay time, excellent energy resolution.

Brief : Lutetium-yttrium oxyorthosilicate, also known as LYSO, is an inorganic chemical compound with main use as a scintillator crystal. Its chemical formula is Lu2(1-x)Y2xSiO5. It is commonly used to build electromagnetic calorimeters in particle physics. LYSO crystals have the advantages of high light output and density, quick decay time, excellent energy resolution.

Application:

The biggest application fields are the major used in life science is PET (positron emission computed tomography (ct) imaging device), including clinical medicine, drugs and pharmacokinetics, biological experiments, such as health care.

Physical Property List:

Our ability: The LYSO crystal scintillation performance of our company has reached the international advanced level, which can meet the requirements of medical imaging PET performance and has the ability of bulk supply. Our company has a complete set of crystal processing and assembly line, and can process all kinds of crystal and display assembly according to customer's requirements. The crystal size has reached dia80mm *200mm length which can also be made to typical round wafers: 1”/2”/3” etc with SSP(single side polished)&DSP(double sides polished).

utetium Yttrium Silicate (LYSO) Scintillation Crystal is a high-density, cerium-doped inorganic scintillator renowned for its exceptional light output, fast decay time, high stopping power, and excellent energy resolution. These outstanding properties make LYSO:Ce crystals one of the most widely used scintillation materials for PET scanners, nuclear medicine, high-energy physics, homeland security, industrial inspection, and gamma-ray detection.

CQT GROUP supplies premium-quality LYSO scintillation crystals in customized dimensions and surface finishes to meet the requirements of OEM manufacturers, research institutes, medical equipment suppliers, and radiation detection system integrators worldwide.

What is a LYSO Scintillation Crystal?

LYSO (Lutetium Yttrium Orthosilicate) is an advanced inorganic scintillator composed primarily of lutetium silicate with partial substitution of yttrium and activated by cerium (Ce). When exposed to ionizing radiation such as gamma rays or X-rays, the crystal converts high-energy photons into visible light, which is then detected by photomultiplier tubes (PMTs), silicon photomultipliers (SiPMs), or avalanche photodiodes (APDs).

Compared with conventional scintillation materials such as NaI(Tl), BGO, or CsI(Tl), LYSO offers significantly faster response, higher density, better radiation stopping efficiency, and improved timing performance.

Key Features

High Light Output

LYSO crystals provide excellent scintillation efficiency, generating a high number of photons for improved signal quality and detection accuracy.

Benefits include:

High detection sensitivity

Improved signal-to-noise ratio

Enhanced image quality

Accurate energy measurement

Fast Decay Time

One of the most significant advantages of LYSO is its rapid scintillation decay time of approximately 40 ns, enabling high-speed counting and excellent timing resolution.

Advantages include:

High count-rate capability

Reduced pile-up effects

Faster data acquisition

Ideal for Time-of-Flight (TOF) PET

High Density and Effective Atomic Number

With a density of approximately 7.1 g/cm³ and a high effective atomic number, LYSO offers exceptional stopping power for high-energy gamma rays.

This results in:

Higher detection efficiency

Better gamma-ray absorption

Compact detector designs

Improved imaging performance

Excellent Energy Resolution

LYSO crystals provide consistent scintillation performance and excellent energy resolution, helping distinguish between different radiation energies.

Suitable for:

Gamma spectroscopy

Medical imaging

Nuclear research

Radiation monitoring

Non-Hygroscopic Material

Unlike sodium iodide crystals, LYSO is non-hygroscopic and does not require hermetic sealing.

Advantages include:

Easy handling

Long service life

Stable performance

Simplified detector packaging

Surface Finish Options

To optimize optical performance, we offer multiple surface treatments:

Polished

Fine Ground

Optical Grade Polish

Diffused Surface

Custom Surface Processing

Reflective coatings and optical coupling preparation are also available.

Applications

Positron Emission Tomography (PET)

LYSO is the preferred scintillation material for modern PET and TOF-PET scanners because of its fast response and excellent timing resolution.

Applications include:

Clinical PET scanners

TOF-PET systems

Small animal PET

PET/CT

PET/MRI

Nuclear Medicine

LYSO crystals are widely used in diagnostic imaging systems requiring high detection efficiency.

Applications include:

Gamma cameras

Molecular imaging

Nuclear diagnostics

Medical research

High-Energy Physics

Research laboratories use LYSO crystals in particle detection and calorimetry systems.

Applications include:

Particle detectors

Collider experiments

Calorimeters

Nuclear physics research

Homeland Security

LYSO detectors provide reliable radiation identification for security applications.

Applications include:

Radiation portal monitors

Border security

Cargo inspection

Nuclear material detection

Industrial Radiation Detection

Industrial systems utilize LYSO crystals for non-destructive testing and process monitoring.

Applications include:

Industrial CT

Gamma inspection

Process control

Radiation gauges

Scientific Research

Universities and research institutes employ LYSO in a wide range of experimental detection systems.

Applications include:

Radiation spectroscopy

Detector development

Nuclear instrumentation

Space science

Advantages of LYSO over Other Scintillation Crystals

Compared with traditional scintillation materials, LYSO offers several advantages:

Higher density than NaI(Tl)

Faster decay time than BGO

Better timing performance for TOF applications

Non-hygroscopic construction

Excellent mechanical strength

High light yield

Superior radiation hardness

Compact detector design capability

Long operational lifetime

Excellent compatibility with SiPM and PMT detectors

Custom Manufacturing Services

CQT GROUP provides comprehensive customization services, including:

Custom crystal dimensions

Crystal arrays

Pixel pitch customization

Surface polishing

Optical coating preparation

Precision machining

Detector assembly support

OEM manufacturing

Prototype production

Volume manufacturing

Quality Assurance

Every LYSO scintillation crystal undergoes strict quality control, including:

Dimensional inspection

Optical transmission testing

Light output measurement

Surface quality inspection

Crystal defect evaluation

Performance consistency verification

This ensures reliable performance for demanding medical, industrial, and scientific applications.