SOME LAPAROSCOPIC PROBES

1. SIEMENS ACUSON P300 LP323

• Frequency range : 4-13 MHz
• Selectable THI(TEI) frequencies and penetration
• Articulation : +/- 90 degree up or down ,  +/- 90 degree left or right

2. HITACHI- L44LA

• Linear laparoscopic 4- way probe
• Frequency range : 2-13 MHz
• Compatible with : AIETTA Systems

3. HITACHI- L44LA1

• Linear laparoscopic rigid probe
• Frequency range : 2-13MHz
• Compatible with : AIERTTA Systems

4. HITACHI- EUP-OL334

• Convex laparoscopic probe
• Frequency range : 5-10 MHz
• Compatible with : HI VISION Systems

5. HITACHI- UST-5418

• Linear laparoscopic 4-way probe
• Frequency range : 2-13 MHz
• Compatible with : Prosound Systems

6. HITACHI- UST-5550

• Linear laparoscopic 2-way probe
• Frequency range : 2-13 MHz
• Compatible with : Prosound Systems

7. HITACHI- UST-52109

• Rigid end fire Laparoscopic sector probe
• Frequency range : 2-13MHz
• Compatible with : Prosound Systems

8. BK MEDICAL 8666-RF

• 4-Way laparoscopic probe
• Frequency range : 4.3-10 MHz
• Flexible for difficult to reach areas

9. BK MEDICALS I12C4f

• 4-way laparoscopic probe
• Frequency range : 4-12 MHz
• Ethanol or contrast agent injections

10. BK MEDICALS  8836

• Rigid convex laparoscopic probe
• Frequency range : 5-12 MHz
• Compatible with modern sterilization methods

To know about more Laparoscopic probes contact us

ULTRASOUND TRANSDUCER CHARACTERISTICS FOR IMAGING

1. ACOUSTIC WINDOW

•  Standard acoustic window provides an unobstructed view of organ or region.
• Typical windows are located in or on the head, chest, abdomen, pelvis, vessels and various orifices of the body.
• Transducer can associated with certain regions through latin prefixes like:

Trans :- through or across  

Intra : - Into or inside

Endo :- within. 

• For example Transthoracic means Image through chest.
• For each type of acoustic window; a particular type transducer is used to get the required sonographic data.
• Eg:- phased arrays are used for transthoracic window and convex arrays are used for abdominal window.

An acoustic window showing artery and vain

2. PENETRATION 

• Penetration is the minimum scan depth at which electronic noise is visible; despite optimization of available control.
• It can be primarily determined by the center of the frequency of the transducer.
• That is the transducer having high frequency will have low penetration.

Relationship between frequency and penetration

3. SPACIAL RESOLUTION

• It is the ability to discern the smallest possible dimension in both axial and lateral directions.
• Axial resolution refers to the ability to distinguish two structures that lie along the axis (i.e. parallel) of the ultrasound beam as separate and distinct.
• Axial resolution is determined by the pulse length.
• Lateral resolution refers to resolution of objects lying side by side (i.e., perpendicular to the beam axis).
• Lateral resolution is directly related to the transducer beam width, which in turn is inversely related to the ultrasound frequency.

4. TRANSDUCER PARAMETERS

• It includes:

1. Efficiency
2. Signal to Noise Ratio,
3. Absorbtion of the tissues
4. Band width 
5. Number of elements in transducer etc.