The best replacement for ultrasound is sonogram.

The best alternatives to ultrasound are rated as following:
★★★★★  sonogram
★★★★  mammogram
★★★★  mri
★★★★  ct scan
★  x ray
★  lmp
★  sonography
★  mammography
★  ct
★  radiology
★  ultrasound
★  doppler
  xray
  mammogram breast cancer
  mammogram which is better
  tens
  mri shoulder
  sonar
  cat scan
  laser therapy
  ultrasonic
  last menstrual period
  echo
  lmp which is more accurate
  4d ultrasound
  laser liposuction
  colonoscopy
  hida scan
  lmp dating
  dental hygiene
  stethoscope
  diagnostic ultrasound
  ultrasonography
  respiratory therapy
  x-ray
  tens machine
  nerve stimulator
  cold laser
  vibration analysis
  cold laser therapy
  continuous
  ct appendicitis
  xray tech
  x rays
  emg
  radio frequency
  radiography
  mrcp
  tens unit
  hcg
  electrical stimulation
  scan
  amniocentesis

Your alternative for ultrasound is not listed? Suggest!
Speaking about ultrasound, one probably shouldn't forget about doppler.

Other search terms related to ultrasound and their ratings are:
★★★★★ doppler
★★★★ full bladder
★★★ twins
★★ down syndrome
★ no heartbeat
★ heartbeat
cleft lip
cortisone
transvaginal
biopsy
fna
embryo
You have in mind a companion for ultrasound and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ultrasound in all years. Click on graph for more.
ultrasound
sonogram
mammogram