Introduction
Solo™ is a single-detector gamma camera system designed for planar imaging, developed by DDD-Diagnostic A/S in Denmark. Known for its Danish design and quality, the system is compact, cost-efficient, and suitable for various medical environments including hospitals and outpatient clinics.

Design and Features
The Solo™ system is designed for simplicity, reliability, and high performance. It features a small footprint and a base that allows easy patient access. The system includes a complete workstation that integrates with hospital infrastructure and supports DICOM Modality Work-list.

Detector Specifications

• Crystal thickness: 9.5 mm
• UFOV Circular: 210 mm diameter
• Energy range: 55–400 keV
• Intrinsic spatial resolution: < 3.7 mm (FWHM), < 7.6 mm (FWTM)
• Intrinsic energy resolution: < 9.4%
• Intrinsic flood field uniformity: < 1.5% (Differential), < 2.5% (Integral)
• Intrinsic count rate performance: > 250 kcps

System Performance

• System spatial resolution: LEGP < 9.4 mm FWHM @ 100 mm, LEHR < 7.8 mm FWHM @ 100 mm
• System planar sensitivity: LEGP ~ 270 cpm/µCi, LEHR ~ 190 cpm/µCi
• Available collimators: LEGP, LEHR, MEGP, HEGP, Pinhole with exchangeable inserts, and diverging LEGP

Image Acquisition
The system supports static, dynamic, and gated planar imaging procedures with user-definable acquisition protocols. It offers a range of matrix sizes and pixel sizes, and supports both manual and automatic DICOM 3.0 protocols.

Motion and Positioning

• Motorized vertical detector movement with fast and slow speeds
• Manual tilt and rotation with magnetic locks
• Detector reach: 64 cm from gantry edge to middle of detector

Usability
The Solo™ system includes a laptop PC-based graphical user interface for image acquisition and processing. It features a persistence scope and energy spectrum display. The system is designed for ease of use with adjustable gantry and detector configurations, accommodating various patient positions.

Conclusion
Solo™ is a versatile gamma camera system that offers high performance and ease of use in a compact design, making it suitable for a wide range of medical imaging procedures.