BSD-500 Superficial Hyperthermia

A versatile, fully self-contained treatment system in a mobile configuration or maximum treatment flexibility of superficial tumors within 1” of skin surface

BSD-500 Features

No shielding room needed
FDA Approved for palliative treatment of certain tumors
Delivers both superficial and interstitial hyperthermia

Generator: 915 MHz / 0-400 Watts per channel / 8 Channels.
Wave Guides: Three (3) external wave guides for direct energy application to solid surface tumors (MA-120, MA-151, MA-100), including overhead suspension system.
Thermometry: Eight (8) ports for thermistor type sensors, sensor simulator and thermal probe calibration well.

4-Channel Interstitial/Superficial
  • 1 MA 100 Applicato
  • 1 MA 151 Applicator
  • 4 Temperature sensors
  • 16 Interstitial applicators
8-Channel Interstitial/Superficial
  • 1 MA 100 Applicator
  • 1 MA 151 Applicator
  • 1 MA 120 Applicator
  • 8 Temperature sensors
  • 24 Interstitial applicators

BSD-500 specs

Solid State Generator

The BSD 500 microwave hyperthermia system is equipped with a 915 MHz power generator. The solid state generator has 8 channels (BSD 500-8) which can be independently adjusted in phase and amplitude.

Up to 24 Applicators

The 8 channel generator feeds into a 3 way power splitter. Therefore up to 24 applicators can be connected. There is also a 4 channel configuration available that provides up to 16 applicators through a 4 way power splitter.

Up to 400 watts

The system itself is portable, space efficient and produces up to 400 watts of microwave energy in a single channel mode and up to 60 watts per channel in the eight channel mode. A high resolution touch-screen display is used for treatment planning, setup and monitoring during the procedure.

Treats Recurrent Cancer

Superficial hyperthermia is used to non-invasively treat recurrent or progressive cancerous tumors located within a few centimeters of the surface of the body. Interstitial hyperthermia is used to treat recurrent or progressive cancerous tumors located below the skins surface.




Interstitial Applicators

The semi-rigid MA-251 microwave interstitial applicators can be inserted into 15.5 gauge (5 French) radiation implant catheters. The heating pattern is ellipsoidal and approximately 4.5 cm in length along the applicator shaft with heating to the applicator tip.

No Shielding Required

Output frequency of 915 MHz (ISM frequency, requires no RF shielded enclosure) 8 independent channels deliver 0 to 60 watts of power. The forward power of all 8 channels are monitored, controlled and displayed by the computer.

Synchronous or Asynchronous

The computer will monitor and display the reflected power for each channel. In the synchronous mode, all 8 channels are driven by the same signal.

Controlled Phase Offset

The asynchronous mode allows each channel to be driven by independent sources. The power balance and phase offset of each channel is software controlled using the touch screen monitor.

Channel Multiplexer

All eight channels can be multiplexed into a single output channel of 0 to 400 watts under computer control. The forward and reflected power from each of the 8 channels are summed together and displayed as total power.

Water Circulation System


Constant volume water supply bolus temperature controller with a temperature range of 5 °C to 45 °C


Integrated thermal well standard NBS traceable temperature probe accurate within 0.10 °C.


115 - 230 VAC +/- 10%, 50 - 60 Hz Current consumption <15 amps

Four Sensors

Four sensors are provided with the basic system. The interface accepts up to 8 sensors. A typical treatment set-up would utilize 12 to 15 ports for the microwave interstitial applicators and 1 to 4 ports for connections to the temperature sensors.

Non-Mettalic Leads

Temperatures are displayed with resolution of 0.1 °C. - CK Inherently stable thermistor type sensors with non-metallic leads. These sensors are not perturbed by the microwave fields generated in the BSD500 system.

Fits 15.5ga Catheter

The sensor diameter is approximately 1.1 mm and is located at the end of a 33 cm (13 in.) sealed high resistive lead.

Low Leakage

An extension cable is provided with a length approximately 2.1 m (7ft). Leakage currents are guaranteed to be less than 15 micro amps for any type of failure.

Treatment Planning Software

Performing interstitial hyperthermia requires the use fo the BSD-500 built-in treatment planning program.  Using this software, the size and shape of the tumor can be traced on a grid on the computers screen.  Treatment plans can ten be made by simulating the placement of antennae in and around the tumor.  The  power and phase of each channel can be set and adjusted on the screen. Each change in placement, power or phase will display the new simulated heating pattern.

Transfer settings to hyperthermia treatment screen

Trace tumor and position applicators

Calculate energy distribution pattern

Adjust phase and power for heating pattern